/target/etc/apt # cat sources.list
#
# deb cdrom:[Ubuntu-Server 16.04.2 LTS _Xenial Xerus_ - Release amd64 (20170215.8)]/ xenial main restricted
deb cdrom:[Ubuntu-Server 16.04.2 LTS _Xenial Xerus_ - Release amd64 (20170215.8)]/ xenial main restricted
deb http://us.archive.ubuntu.com/ubuntu xenial main
# deb-src http://us.archive.ubuntu.com/ubuntu xenial main
deb http://security.ubuntu.com/ubuntu xenial-security main
# deb-src http://security.ubuntu.com/ubuntu xenial-security main
deb http://security.ubuntu.com/ubuntu xenial-security universe
# deb-src http://security.ubuntu.com/ubuntu xenial-security universe
deb http://security.ubuntu.com/ubuntu xenial-security multiverse
# deb-src http://security.ubuntu.com/ubuntu xenial-security multiverse